Howdy,
Perhaps just terminology or verbage, but I got caught up in the "recommended" vs. "Requirements"...
I am currently sitting in a Class 100,000 clean room. I have none of the things in the above referenced requirement list in place. The last measure in here had a highest particle count (0.5um+) of 1100.
The
requirement of a class 100,000 clean room is that it measures out at <100,000. All the rest is preference.
What preferences you can entertain have a great deal to do with airflow, % inlet coverage, traffic, held processes, etc. We wear Tyvek coats not because we need them, but as a visual 'tone' for employees and customers to not be slobs. If they were slobs, we might end up at 20,000 particle count...still a viable 100K clean room.
My house complies with a 100K cleanroom
requirement. (No kids, no dogs helps to keep it a bit cleaner
)
If the process or regulation requires 100K, keep the
requirement as your focus...the dress is a tool to achieve the requirement, a tool that costs money. More dress = more cost.
Bottom line is to make sure the
requirement is met, not that a specific tool is used a specific way. Rent a particle counter and see what is needed.